alt Hacker NewsSurprisingly, neither Datomic nor XTDB support branching. See: https://blog.danieljanus.pl/datomic-forking-the-past/
I actually built my own immutable database which does support branching (see profile), so it seems like a huge miss that these ones don't. It's pretty much the main reason I would want an immutable database.
Replies
nathell • today at 2:18 PM
It appears that Datahike [0] is a Datomic workalike that supports branching. I haven’t tried it out myself (yet), but the documentation suggests it’s possible [1].
That said, I’m adding xitdb to the list of tech to try out. Thank you for building it!
Oh, and thanks for linking to my article :-)
Wait, this statement seems way too strong.
The linked article points out that Datomic doesn't support branching from the past. It absolutely does support branching, and I've built entire test suites that way.
From a cursory glance, I'd say Datomic does exactly what the original parent article is discussing. It works great and it's super convenient.